joining us live now is john goodwin, assistant director of communications at the metropolitan transportation commission. john, nice to see you. >> good to see you, too, kristin. good afternoon. good afternoon. >> lots of changes for us to talk about. let's start with bart. since its service is many times more riders in the bay area, let's go ahead and show the key changes on a graphic here and maybe you can elaborate for us and explain the thinking . so we have the 20 minute maximum wait time. the pittsburg bay point line will now be every ten minutes and then nine trains per hour to and from sfo. so, john, walk us through what each of these is about. >> okay. so the 20 minute maximum. wait, wait time is designed. waits more than 20 minutes for a train as it as it was until this weekend. and you could at some times of the day wait up to 30 minutes for a train. so this this cuts that by a third the every ten minute frequency for the yellow line by far bart's busiest line. i wrote a yellow line train into san francisco this morning and all of the trains are what they call the fleet of the futu